RU2596121C1 - Device for lifting and lowering disabled persons in wheelchair over staircases - Google Patents

Abstract

FIELD: medicine; personal and household items.

SUBSTANCE: invention relates to social rehabilitation of disabled persons with locomotor function injury, in particular, to unhampered habitat for disabled persons in wheelchairs, and can be used for moving baby carriages. Device for lifting and lowering of disabled persons in wheelchairs over staircases includes two guides, one of which is rigidly attached to the staircase wall, and the other one is movable to move along the staircase by means of the electric drive. Guides are interconnected by braces with hinge joint. Movable guide is equipped with support wheels. Device additionally comprises a folding platform for wheelchair, which allows moving along guides, and tension elements, connected with guides and located between them to ensure exposure on the movable guide at their tension and bring the device from non-working position into working one. Electric drive is composed of electric winches with metal cables, engaged via deflecting units system with moving guide and folding platform. Platform is folding in direction perpendicular to longitudinal axis of the stair.

EFFECT: simple handling folding mechanical device for lifting and lowering of the disabled persons in wheelchairs of any modification over staircases without application of disabled person's physical efforts, the small-size mobile device is actuated by one unaccompanied operator-disabled person with the help of panel.

9 cl, 9 dwg

Description

The invention relates to the field of social rehabilitation of disabled people with impaired musculoskeletal functions, namely, an unhindered living environment for disabled people in wheelchairs, and can be used to move strollers with children.

A device for moving along flights of stairs (RF patent No. 2388444), comprising a transport-folding platform, a guiding support, a power carriage placed on a flight of stairs, a traction and a ratchet dog, is known. The hinged-folding platform is made with spring-loaded hinges with spring-loaded tweaks for stability. Hinged platforms are fixed to the staircase wall and are motionless. This device provides a reclining ramp, which has the ability to change the distance between the rails depending on the wheel track of the wheelchair. The ramp is made as a whole and, when not used, leans back to the wall of the flight of stairs. The guide support is rigidly attached to the railing of the flight of stairs and is made profile with upper and lower positions with holes in the upper and lower groove with the possibility of installing a power carriage on it and moving along it. The device is driven by gears directly connected to the sprocket, which interacts with its teeth with holes in the upper groove of the guide support.

However, in the selected analogue, the guide ramp is a single whole, which sharply increases the moment of its installation in a vertical position, and therefore, the disabled person must necessarily be with an accompanying person. In addition, the operation of the device is mainly associated with the application of effort by a disabled person who, using muscular strength, drives the device. It should be noted that there is an option with an electromechanical drive. But at the same time, a disabled person should have a 2.5 kg screwdriver with him. A wheelchair in the process of lifting and lowering along the flight of stairs is always in an inclined position relative to the horizon, which not all people with disabilities can tolerate.

There is also known a device for the unimpeded movement of prams (RF patent No. 132343 dated 02/18/2013, IPC: A61G 5/06, E04F 11/00), selected as a prototype, which contains two guides interconnected by two pairs of rods with a hinge connection. The articulated guide is rigidly attached to the wall or stairs. The ramp is unfolded (working) and folded (inoperative) by means of, but at least one (depending on the length and mass of the guides) electric drive connected to the guide by means of two ball bearings and a thrust. At least one small wheel is attached to the rail to reduce drag when bringing the ramp from the folded state to the working one and vice versa.

The disadvantages of this device are:

- standard stairs in residential buildings do not provide the maximum allowable angle of inclination according to the current requirements of GOST, which is 2.9 degrees;

- movement along the ramp is carried out only with the help of an escort.

The objective of the present invention is to develop a simple-to-use mechanical device for raising and lowering a disabled person in a wheelchair of any modification along the flight of stairs without the application of physical efforts on the part of the disabled person, while the small-sized mobile device can be operated by the console by one operator - a disabled person without an accompanying person.

The technical result is to increase the ease of use when used on flights of stairs, including narrow ones, simplicity of construction and fastening of the ramp to the wall, lack of efforts to bring the device into working and inoperative position, use of the device without an accompanying one, safety of transportation of wheelchairs and prams. The mobility of the device allows you to remove the ramp to the inoperative position, minimally occupying a flight of stairs and thereby not preventing the residents of the house from moving freely along the stairs.

This object is achieved in that the device for lifting and lowering the disabled in the stroller along the flights of stairs, including two guides, one of which is rigidly attached to the wall of the flight of stairs, and the other is movable with the ability to move along the steps of the flight of stairs by means of an electric drive, while the guides are connected between each other with couplers with a hinge, the movable guide is equipped with support wheels, according to the proposed technical solution contains a folding platform for wheelchair, made with the possibility of moving along the rails, tensile elements connected to the rails and located between them, to ensure that when they are stretched on the movable rail and bring the device from an inoperative state into a working one, the electric drive is made in the form of an electric winch with metal cables connected through a system of deflecting blocks with a movable guide and a folding platform, the platform is folding in a direction perpendicular to the longitudinal degree axis.

The device may include a portable electric drive control panel.

The folding platform is connected to the guides by means of power elements made in the form of iron plates, on the one hand, welded to the folding platform, and on the other, connected to movable supports located inside the guides.

The movable support consists of wheels pressed onto the axle and secured with two ball bearings and two retaining rings.

The tension elements are made in the form of springs.

The couplers are made in the form of two profile square pipes interconnected by a comb mechanism.

Folding platform includes a frame made of welded together square metal with metal hinges, providing folding of the platform.

The folding platform is equipped with a cap frame, which is a round pipe, interconnected by a hinge.

The folding platform is equipped with limiters located at the ends of the folding platform and preventing the stroller from rolling when moving it along the flight of stairs.

The invention is illustrated by drawings, where in FIG. 1 shows a general view of the device, FIG. 2 - the device in the folded state, in FIG. 3 - the device in the course of bringing it into working condition, in FIG. 4 - the device is in working condition, in FIG. 5 - support in the guide, in FIG. 6 - movable connection of the rails, in FIG. 7 - cantilever mounting of a movable support with a guide, in FIG. 8 - frame and cantilever connection of the platform, in FIG. 9 - movable cantilever mounting rail, in FIG. 10 - cap frame.

A device for raising and lowering disabled people in a wheelchair along a flight of stairs includes two guides 1 connected to each other by ties with a hinge, one of which is rigidly attached to the wall of the flight of stairs (at the junction with steps), and the other is movable with the possibility of moving along steps with using an electric drive, a horizontal folding platform 2, connected to the guides 1 using power elements 3 (for example, metal plates) and made with the possibility of movement along the guides. The guides are made in the form, for example, of profile pipes with a groove along the entire length.

Support wheels 9 are attached to the movable rail using a fork 20 (Fig. 9), by means of which the rail is moved parallel to the steps of the span. In turn, the fork 20 is connected to the support wheel 9 using the axis 21 and two nuts 22.

The electric drive is an electric winch 7 mounted on the wall of a stairwell and connected by metal cables 6 passing through a system of deflecting blocks (blocks for steel ropes) 5 with a movable guide and a folding platform 2. Between the guides 1 there are tension elements 13, for example, made in the form of springs.

The springs 13, at least two, depending on the length of the rails, are rigidly fixed between the rails 1. When the system of metal cables 6 is relaxed, the springs 13 unclench and act on the movable rail 1, unfolding the folding platform 2, while the device goes from a folded state (Fig. 2, Fig. 3) in the working (Fig. 4).

From the standpoint of ensuring parallel movement in the operating state of the movable guide 1, both guides are connected by couplers 11 (Fig. 6), for example, which are profile pipes 24, on the one hand, connected to the ears 25 welded to the guides using rivets 17, and with another interconnected by a "comb" mechanism using rivets 17.

The power elements 3 may be metal plates, on the one hand, welded to the folding platform 2, and on the other connected to the movable supports 4 located inside the rails.

The rigidity and mobility of the folding platform 2 is ensured by the frame 18 (FIG. 8) included in it, which is made of square-rolled metal welded together and can be folded “accordion” using hinges 19. Also, metal sheets 26 are welded to the frame 18, providing the horizontal surface of the folding platform 2. In turn, anti-slip base 12 is glued to the metal sheets 26 to ensure safety. Power elements 3 (Fig. 1, Fig. 7) hold the folding platform 2 welded to them in a horizontal state, and also with the help of movable supports 4, the system of deflecting blocks 5 and cables 6 facilitate the movement of the folding platform 2 along the guides. The plug 17 connects the power element 3 and the movable support 4, which consists of wheels 14, pressed onto the axis 16 and secured with two ball bearings 15 and two retaining rings 18 (Fig. 5, Fig. 7).

On the side of the folding platform 2, from the side of the stairway wall, for protection, a cover frame 8 (Fig. 10) is installed, consisting of round pipes welded to the folding platform and connected by a hinge 27, which allows the upper part of the frame to be tilted 90 °, which gives the ability of a disabled person to hold on to the frame while on a folding platform in a wheelchair. At the ends of the folding platform 2, perpendicular to the guides 1, limiters 10 are installed, at least 100 mm high, consisting of metal sheets and connected to the frame 18, which prevent the stroller from rolling during its movement along the flight of stairs. The operation of the limiters 10 depends on the operation of the cover frame 8. At the moment when the upper part of the frame takes a horizontal position, the limiters 10 are lifted by cables that pass inside the frame 8 through the folding platform 2 and connected to the limiters 10, thereby providing complete protection strollers with a wheelchair or other accidents.

The device operates as follows. All operations to bring the device into working condition, lowering and raising a disabled person in a wheelchair are mechanized. The control winch of the electric winch 7 (Fig. 1) contains a remote control located in the hands of a disabled person who, in a non-contact way, drives the electric winch.

As necessary, the disabled person with the remote drives out to the landing and through the remote control brings the entire device from a folded inoperative (Fig. 2) to a working state (Fig. 4). In this case, when the electric winch 7 is turned on, the first metal cable 6 connected to the movable guide 1 loosens, the springs 13 open, creating the first impulse for the movable guide 1 to move, unfolding the folding platform 2. After that, the disabled person drives the carriage onto the platform and lowers the collar frame 8, during this limiters rise 10. The electric winch at this time is in a static state. Including the winch (using the remote control), the platform connected to the second metal cable 6, with a disabled person begins to move down to the contact of the platform with the lower platform. After the platform stops, the limiters 10 recline to touch the floor for easy access and the disabled person in the wheelchair moves out of it and the remote control brings the device to the assembled state. To do this, a command is issued to lift onto the electric winch 7 and cable 6, rushing upward, pulling the swivel joint 11 of the guides 1, which drives the movable guide 1, which moves on the support wheels 9 to the fixed guide 1, thereby folding the folding platform 2 And the whole device is brought back to the initial assembled state.

In the case of lifting a disabled person in a wheelchair from the bottom platform up, the device operates in the same sequence. First, the disabled person brings the device to working condition, then drives onto the platform.

Thus, the proposed technical solution has enhanced ease of use when used on flights of stairs, including narrow ones, the simplicity of the design and mounting of the ramp to the wall, the lack of effort to bring the device into working and non-working position, ensures the use of the device without an accompanying one, the safety of transportation of disabled and prams.

At the same time, the design of the guides and the platform is such that when they are brought into an inoperative state, they are folded in the direction perpendicular to the longitudinal axis of the device, and the dimensions of the device along the width of the staircase are sharply reduced. Bringing the device into working condition and vice versa is carried out by a disabled person through the remote control and does not require an attendant.

Claims (9)

1. A device for lifting and lowering disabled people in a wheelchair along the flights of stairs, including two guides, one of which is rigidly attached to the wall of the flight of stairs, and the other is movable with the ability to move along the steps of the flight of stairs by means of an electric drive, while the rails are interconnected by ties swivel, the movable guide is equipped with support wheels, characterized in that it contains a folding platform for placing a wheelchair, made with the possibility of moving I along the rails, tension elements connected to the rails and located between them, to ensure that they stretch onto the movable rail and bring the device from an inoperative state to the working one, while the electric drive is made in the form of an electric winch with metal cables connected through a system of deflecting blocks with movable guide and folding platform, the platform is made folding in a direction perpendicular to the longitudinal axis of the step. 2. The device according to p. 1, characterized in that it contains a portable control panel of the electric drive. 3. The device according to p. 1, characterized in that the folding platform is connected to the rails by means of power elements made in the form of iron plates, on the one hand, welded to the folding platform, and on the other - connected to movable supports located inside the rails. 4. The device according to p. 3, characterized in that the movable support is a wheel, pressed onto the axis and secured with two ball bearings and two retaining rings. 5. The device according to claim 1, characterized in that the tension elements are made in the form of springs. 6. The device according to claim 1, characterized in that the couplers are made in the form of two profile square pipes interconnected by a "comb" mechanism. 7. The device according to p. 1, characterized in that the folding platform includes a frame made of welded together square metal with metal loops that provide folding of the platform. 8. The device according to p. 1, characterized in that the folding platform is equipped with a cap frame, which is a round pipe, interconnected by a hinge. 9. The device according to p. 1, characterized in that the folding platform is equipped with stops located at the ends of the folding platform and preventing the stroller from rolling when moving it along the flight of stairs.

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